EP2695327B1 - Systèmes et procédés pour mettre en oeuvre une multidiffusion à l'aide d'une technologie sans fil de réseau personnel (pan) - Google Patents

Systèmes et procédés pour mettre en oeuvre une multidiffusion à l'aide d'une technologie sans fil de réseau personnel (pan) Download PDF

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Publication number
EP2695327B1
EP2695327B1 EP12715525.7A EP12715525A EP2695327B1 EP 2695327 B1 EP2695327 B1 EP 2695327B1 EP 12715525 A EP12715525 A EP 12715525A EP 2695327 B1 EP2695327 B1 EP 2695327B1
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EP
European Patent Office
Prior art keywords
multicasting
channel
data
information
area network
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Not-in-force
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EP12715525.7A
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German (de)
English (en)
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EP2695327A1 (fr
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Brian A. Redding
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Qualcomm Inc
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Qualcomm Inc
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Priority to CY20151100976T priority Critical patent/CY1117020T1/el
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1813—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast for computer conferences, e.g. chat rooms
    • H04L12/1827—Network arrangements for conference optimisation or adaptation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication

Definitions

  • This application relates generally to wireless communications, and more specifically to systems and methods for multicasting data using Personal Area Network (PAN) wireless technology.
  • PAN Personal Area Network
  • Bluetooth is a type of wireless technology usually used for exchanging data between devices over short distances such as in a personal area network (PAN).
  • PAN personal area network
  • the PAN or body area networks in the Bluetooth standard may be defined by devices that have "paired" with each other and are therefore able to exchange data. Pairing is a process by which devices register with each other, including under user control. Once paired, devices typically can communicate with each other whenever they are within range and active without re-performing the pairing process.
  • Bluetooth devices may be limited as to the number of devices they can pair with, and therefore are limited as to the number of devices that a single Bluetooth device can send data to at a given time. Further, Bluetooth communications can include significant overhead for security and robustness, including the use of acknowledgments (ACKs and NAKs) sent by a party receiving data to the sender of the data to ensure receipt of the data.
  • ACKs and NAKs acknowledgments
  • Bluetooth wireless technologies it may be beneficial to use Bluetooth wireless technologies to send data, i.e., multicast, to a plurality devices, such as due to the power efficiency of Bluetooth wireless technologies.
  • multicasting using Bluetooth wireless technologies is not directly supported in the Bluetooth standard. Therefore, new systems and methods are needed that support such multicasting.
  • US 2009 232041 discloses a method for multicasting data in a personal area network.
  • One aspect of the disclosure provides a method for multicasting data in a personal area network.
  • the method comprises advertising multicasting capabilities over a first channel in the personal area network.
  • the method further comprises receiving a request for information about a multicasting channel including at least a channel map.
  • the method further comprises transmitting a response to the request, the response comprising information about the multicasting channel.
  • the method further comprises transmitting multicast packets over the multicasting channel according to the channel map.
  • Another aspect of the disclosure provides a method for multicasting data in a personal area network.
  • the method comprises scanning a first channel in the personal area network for a device capable of multicasting data.
  • the method further comprises transmitting a request for information about a multicasting channel to the device.
  • the method further comprises receiving a response to the request, the response comprising information about the multicasting channel including at least a channel map.
  • the method further comprises receiving multicast packets over the multicasting channel according to the channel map.
  • the apparatus comprises a processor and a transceiver.
  • the processor and transceiver are cooperatively configured to advertise multicasting capabilities over a first channel in the personal area network.
  • the processor and transceiver are further cooperatively configured to receive a request for information about a multicasting channel.
  • the processor and transceiver are further cooperatively configured to transmit a response to the request, the response comprising information about the multicasting channel including at least a channel map.
  • the processor and transceiver are further cooperatively configured to transmit multicast. packets over the multicasting channel according to the channel map.
  • the apparatus comprises a processor and a transceiver.
  • the processor and transceiver are cooperatively configured to scan a first channel in the personal area network for a device capable of multicasting data.
  • the processor and transceiver are further cooperatively configured to transmit a request for information about a multicasting channel to the device.
  • the processor and transceiver are further cooperatively configured to receive a response to the request, the response comprising information about the multicasting channel including at least a channel map.
  • the processor and transceiver are further cooperatively configured to receive multicast packets over the multicasting channel according to the channel map.
  • Another aspect of the disclosure provides a computer readable medium comprising instructions that, when executed, cause an apparatus to perform a method for multicasting data in a personal area network.
  • the method comprises advertising multicasting capabilities over a first channel in the personal area network.
  • the method further comprises receiving a request for information about a multicasting channel including at least a channel map.
  • the method further comprises transmitting a response to the request, the response comprising information about the multicasting channel.
  • the method further comprises transmitting multicast packets over the multicasting channel according to the channel map.
  • Another aspect of the disclosure provides a computer readable medium comprising instructions that, when executed, cause an apparatus to perform a method for multicasting data in a personal area network.
  • the method comprises scanning a first channel in the personal area network for a device capable of multicasting data.
  • the method further comprises transmitting a request for information about a multicasting channel to the device.
  • the method further comprises receiving a response to the request, the response comprising information about the multicasting channel including at least a channel map.
  • the method further comprises receiving multicast packets over the multicasting channel according to the channel map.
  • the apparatus comprises means for advertising multicasting capabilities over a first channel in the personal area network.
  • the apparatus further comprises means for receiving a request for information about a multicasting channel.
  • the apparatus further comprises means for transmitting a response to the request, the response comprising information about the multicasting channel including at least a channel map.
  • the apparatus further comprises means for transmitting multicast packets over the multicasting channel according to the channel map.
  • the apparatus comprises means for scanning a first channel in the personal area network for a device capable of multicasting data.
  • the apparatus further comprises means for transmitting a request for information about a multicasting channel to the device.
  • the apparatus further comprises means for receiving a response to the request, the response comprising information about the multicasting channel including at least a channel map.
  • the apparatus further comprises means for receiving multicast packets over the multicasting channel according to the channel map.
  • Bluetooth wireless technologies The systems and methods described herein are described with respect to Bluetooth wireless technologies.
  • the systems and methods may be particularly relevant to portions of the Bluetooth V4.0 standard relating to low energy communications, hereinafter referred to as Bluetooth low energy.
  • Bluetooth low energy Low energy communications
  • one of skill in the art will recognize that the systems and methods may also be relevant to other similar wireless technologies including other versions of the Bluetooth standard. Details about the Bluetooth standard may be found in BLUETOOTH SPECIFICATION Version 4.0 [Vol 0], published June 30, 2010 .
  • systems and methods described herein may be implemented on a variety of different computing devices. These include general purpose or special purpose computing system environments or configurations. Examples of well known computing systems, environments, and/or configurations that may be suitable for use with the invention include, but are not limited to, personal computers, server computers, hand-held or laptop devices, multiprocessor systems, microprocessor-based systems, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like. Further, the systems and methods may be implemented in mobile devices (e.g., phones, smartphones, Personal Digital Assistants (PDAs), Ultra-Mobile Personal Computers (UMPCs), Mobile Internet Devices (MIDs), etc.).
  • PDAs Personal Digital Assistants
  • UMPCs Ultra-Mobile Personal Computers
  • MIDs Mobile Internet Devices
  • Bluetooth low energy restricts the device that has data to transmit (advertiser or slave device) from connecting to multiple receiving devices as currently the Bluetooth low energy has topology restrictions that only allow the advertiser or slave to connect to a single receiving device.
  • Bluetooth low energy does have a broadcast capability, but such capability is not suited for multicasting.
  • the Bluetooth low energy broadcasting capability is limited to broadcasting on only 3 of the 36 communications channels defined in Bluetooth low energy. Therefore, such broadcasting capability is usually limited to discovering devices in order to form connections or pair devices in a PAN.
  • Another reason that the Bluetooth low energy broadcasting capability is not suited for multicasting is due to the noisy communications environment (e.g., due to radio frequency (RF) signals) in which devices may be used. In such noisy environments, some of the communications channels may not be available due to interference, therefore further limiting the actual number of channels available for broadcasting to be less than 3.
  • RF radio frequency
  • FIG. 1 illustrates an exemplary communications device 10a multicasting data to a plurality of receiving devices 10b.
  • a single device 10a can communicate data to a plurality of devices 10b using the systems and methods described herein.
  • the communications device 10a may comprise a heart-rate monitor sensor that may transmit heart-rate data to multiple devices 10b such as a watch, a phone, exercise equipment, etc.
  • a 3D television may send sync information to a plurality of active 3D glasses (for example, hundreds of 3D glasses such as in a theater setting) in order to synchronize the timing of the shutter on the glasses and the display of 3D video on the television.
  • a plurality of active 3D glasses for example, hundreds of 3D glasses such as in a theater setting
  • the systems and methods described herein are capable of scaling to allow multicasting to large numbers of devices as they allow for a number of receivers as well as, for example, at least 30% less overhead for transmission and reception to the first receiver as compared to traditional Bluetooth low energy, and no additional overhead for subsequent receivers. Therefore, the number of receivers receiving the multicast has no effect on the overall bandwidth used to transmit data to the multiple receivers.
  • the device 10a transmits a first type of advertising packet (e.g., an ADV_SCAN_IND packet of the Bluetooth standard) to advertise to devices 10b (e.g., scanning devices) the availability of the device 10a to multicast data.
  • the first type of advertising packet may be sent, for example, according to the Bluetooth low energy broadcasting capability.
  • the devices 10b having received the first type of advertising packet, may then send a scan request packet (e.g., a SCAN_REQ packet of the Bluetooth standard) to the device 10a to get information on how to receive the multicast data from the device 10a.
  • a scan request packet e.g., a SCAN_REQ packet of the Bluetooth standard
  • the device 10a may then send a response packet (e.g., a SCAN_RSP packet of the Bluetooth standard) to the devices 10b to provide the channel information (e.g., a channel map, a starting channel, offset (e.g., for syncing), a multicast ID, a time interval, etc.) for the device 10b to use to access the multicast data on one or more particular channels at given times, where the one or more channels may change at different time intervals.
  • a response packet e.g., a SCAN_RSP packet of the Bluetooth standard
  • the channel information e.g., a channel map, a starting channel, offset (e.g., for syncing), a multicast ID, a time interval, etc.
  • the device 10b may listen on communications channels based on the channel information in the response packet for a second type of advertising packet, which may be referred to herein as a ADV_MCAST_IND packet, that includes the multicast data. In some embodiments, the device 10b does not acknowledge receipt of ADV_MCAST_IND packets from the device 10a, thereby reducing transmission overhead.
  • the device 10a may turn on and off transmission of one or both of the first type of advertising packet and the second type of advertising packet at any time. For example, the device 10a may turn off such transmission to conserve power.
  • the device 10a may stop transmission of the first type of advertising packet if a maximum number of devices are receiving the multicast data. In one embodiment, the device 10a may stop transmission of the second type of advertising packet if there is not data to multicast.
  • FIG. 2 is a functional block diagram of a wireless communication device 10.
  • Wireless communication device 10 may be representative of one or both of devices 10a and 10b discussed above with respect to FIG. 1 .
  • the wireless communication device 10 includes a processor 210 in data communication with a memory 220, an input device 230, and an output device 240.
  • the processor is further in data communication with a modem 250 and a transceiver 260.
  • the transceiver 260 is also in data communication with the modem 250 and an antenna 270.
  • functional blocks described with respect to the wireless communication device 10 need not be separate structural elements.
  • the processor 210 and memory 220 may be embodied in a single chip.
  • two or more of the processor 210, modem 250, and transceiver 260 may be embodied in a single chip.
  • the processor 210 can be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any suitable combination thereof designed to perform the functions described herein.
  • a processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • the processor 210 can be coupled, via one or more buses, to read information from or write information to memory 220.
  • the processor may additionally, or in the alternative, contain memory, such as processor registers.
  • the memory 220 can include processor cache, including a multi-level hierarchical cache in which different levels have different capacities and access speeds.
  • the memory 220 can also include random access memory (RAM), other volatile storage devices, or non-volatile storage devices.
  • the storage can include hard drives, optical discs, such as compact discs (CDs) or digital video discs (DVDs), flash memory, floppy discs, magnetic tape, and Zip drives.
  • the processor 210 is also coupled to an input device 230 and an output device 240 for, respectively, receiving input from and providing output to, a user of the wireless communication device 10.
  • Suitable input devices include, but are not limited to, a keyboard, buttons, keys, switches, a pointing device, a mouse, a joystick, a remote control, an infrared detector, a video camera (possibly coupled with video processing software to, e.g., detect hand gestures or facial gestures), a motion detector, or a microphone (possibly coupled to audio processing software to, e.g., detect voice commands).
  • Suitable output devices include, but are not limited to, visual output devices, including displays and printers, audio output devices, including speakers, headphones, earphones, and alarms, and haptic output devices, including force-feedback game controllers and vibrating devices.
  • the processor 210 is further coupled to a modem 250 and a transceiver 260.
  • the modem 250 and transceiver 260 prepare data generated by the processor 210 for wireless transmission via the antenna 270 according to one or more air interface standards (e.g., Bluetooth low energy).
  • the modem 250 and transceiver 260 also demodulate data received via the antenna 270 according to one or more air interface standards.
  • the transceiver can include a transmitter, receiver, or both. In other embodiments, the transmitter and receiver are two separate components.
  • the modem 250 and transceiver 260 can be embodied as a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any suitable combination thereof designed to perform the functions described herein.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • FIG. 3 is a flowchart illustrating an exemplary process 300 for multicasting data from a device 10a to a plurality of devices 10b.
  • the device 10a transmits a first type of advertising packet (e.g., an ADV_SCAN_IND packet of the Bluetooth standard) over communications channels to advertise to the devices 10b (e.g., scanning devices) the availability of the device 10a to multicast data.
  • the first type of advertising packet may be sent, for example, according to the Bluetooth low energy broadcasting capability.
  • the first type of advertising packet may include information indicating that the device 10a is capable of transmitting and/or has data to transmit via multicasting to a plurality of devices.
  • the first type of advertising packet may include information indicating an identity of the device 10a (e.g., a universally unique identifier (UUID) and/or a device name).
  • UUID universally unique identifier
  • the use of the ADV_SCAN_IND packet allows the standard advertising capabilities of Bluetooth lower energy to be used. Therefore, the first type of advertising packet may be sent over particular channels (e.g., 3 of the 36 channels in the Bluetooth low energy standard).
  • the devices 10b scan the channels over which the first type of advertising packet is sent, and receive the first type of advertising packet.
  • the devices 10b are able to determine from the first type of advertising packet that multicast data is available from the device 10a.
  • the devices 10b that desire to receive the multicast data from the device 10a each transmit a scan request packet (e.g., a SCAN_REQ packet of the Bluetooth standard) to the device 10a to get information on how to receive the multicast data from the device 10a.
  • the scan request packet may include information regarding an identity of the device 10b, an identity of the device 10a, or additional information.
  • the device 10a upon receipt of the scan request packet, may send a response packet (e.g., a SCAN_RSP packet of the Bluetooth standard) to the devices 10b from which a scan request packet was received.
  • the response packet may include information about the channel information (e.g., a channel map, a starting channel, offset (e.g., for syncing), a multicast ID, a time interval, etc.) for the device 10b to use to access the multicast data.
  • the device 10b may listen on communications channels based on the channel information in the response packet for a second type of advertising packet transmitted by the device 10a (it should be noted that the device 10a may be transmitting the second type of advertising packets at any time during the process 300, thereby allowing devices 10b with the correct channel information to receive multicast data), which may be referred to herein as a ADV_MCAST_IND packet, that includes the multicast data.
  • the response packet may include channel information (e.g., a channel map, a starting channel, offset (e.g., for syncing), a multicast ID, a time interval, etc.) that allows the device 10b to listen on the appropriate channel for multicast data.
  • the device 10b may utilize the offset to determine at what time it should listen for an initial multicast data packet. Further, the device 10b may utilize the starting channel to determine at which frequency channel to listen for an initial multicast data packet. In addition, the device 10b may use the multicast ID to verify that data packets received at the initial multicast data packet received at the specified channel and time is a multicast data packet of the multicast from device 10a. The device 10b may further utilize the channel map to determine the sequence of channels on which the multicast data packets are sent. Accordingly, the device 10b may locate the starting channel in the sequence of channels in the channel map and determine the next channel to listen on to receive a next multicast data packet.
  • the device 10b may further use the time interval given in the response packet to determine when to listen for the next packet after the previous packet is received. In some embodiments, the device 10b does not acknowledge receipt of ADV_MCAST_IND packets from the device 10a, thereby reducing transmission overhead.
  • the second type of advertising packet includes a multicast ID associated with the one type of multicast data (e.g., 3D glasses sync data) transmitted by the device 10a.
  • the multicast ID allows the device 10b to confirm what multicast the data received in the second type of advertising packet is associated with.
  • the multicast ID may have a length of 2 octets.
  • the second type of advertising packet comprises a payload including the multicast data.
  • the payload may have a length of 0-35 octets.
  • FIG. 4 illustrates an exemplary first type of advertising packet 400.
  • the first type of advertising packet 400 which is a link level (LL) layer packet 402.
  • the advertising packet 400 comprising a preamble 412, access address 414, payload 416, and a cycle redundancy check (CRC) 418.
  • the payload 416 comprises an advertising channel packet 404 comprising a header 422 and a payload 424.
  • the payload 424 comprises an ADV_SCAN_IND packet 406 comprising an advertising address (AdvA) 432 and advertising data (AdvData) 434.
  • the advertising data 434 comprises a first length field 442, a first advertising data (AD) type 444, a UUID 446, a second length field 448, a second advertising data (AD) type 450, and a device name 452.
  • the device 10a may transmit the first type of advertising packet 400 to devices 10b to indicate the availability of multicasting data to the devices 10b from the device 10a.
  • the device 10b may utilize the UUID 446 and device name 452 to identify the device 10a.
  • FIG. 5 illustrates an exemplary scan request packet 500.
  • the scan request packet 500 which comprises a link level (LL) layer packet 502 comprising a preamble 512, access address 514, payload 516, and a cycle redundancy check (CRC) 518.
  • the payload 516 comprises an advertising channel packet 504 comprising a header 522 and a payload 524.
  • the payload 524 comprises a SCAN_RSP packet 506 comprising an advertising address (AdvA) 532 and scan response data (ScanRspData) 534.
  • the scan response data 534 comprises a length field 542, an advertising data (AD) type 544, and a multicasting information (MCastInfo) field 546.
  • AD advertising data
  • MCastInfo multicasting information
  • the MCastInfo field 546 comprises a multicast ID 552. As discussed above, the multicast ID 552 provides a unique identifier to the device 10b that identifies the multicast data that is available from the device 10a. The multicast ID 552 may be 2 octets in length.
  • the MCastInfo field 546 further comprises a channel map (ChM) field 554.
  • the ChM field 554 may be a bit field indicating which channels (e.g., of the 36 channels used in Bluetooth low energy) are used by the device 10a to transmit the multicast data.
  • the ChM field 554 may indicate that the device 10a transmits on certain channels at certain times, such as a channel hopping sequence.
  • the ChM field 554 may have a length of 5 octets.
  • the MCastInfo field 546 further comprises an offset field 556.
  • the offset field 556 indicates an offset with respect to a clock timing (e.g., based on transmission of the scan request packet discussed above) synchronized between the device 10a and devices 10b at which the device 10a transmits the multicast data.
  • the offset field 556 may have a length of 2 octets.
  • the MCastInfo field 546 further comprises a next channel number field 558.
  • the next channel number field 558 indicates which channel is being used next by the device 10a to transmit the multicast data at the offset indicated by the offset field 556.
  • the next channel number field 558 may have a length of 1 octet.
  • the MCastInfo field 546 further comprises an interval field 560.
  • the interval field 560 indicates the amount of time between transmission of multicast packets by the device 10a.
  • the interval field 560 may have a length of 2 octets.
  • the MCastInfo field 546 further comprises a sleep clock accuracy (SCA) field 562.
  • the SCA field 562 indicates the to the receiver device 10b an accuracy of the sleep clock on the device 10a. Accordingly, the device 10b can adjust the time it expects to receive multicast data from the device 10a based on potential inaccuracy in the sleep clock of the device 10a.
  • the SCA field 562 may have a length of 3 bits. As discussed above, the device 10b may utilize this information to adjust the timing and frequency on which the device 10b looks for multicast data from the device 10a.
  • the systems and methods described herein provide certain advantages for multicasting data, including reduced overhead, which can lead to shorter timings for the transmission of multicasting data.
  • the maximum transmission time of an ADV_SCAN_IND packet is 376 ⁇ s.
  • a SCAN_REQ packet has a transmission time of 176 ⁇ s.
  • the maximum transmission time of a SCAN_RSP packet is 376 ⁇ s.
  • T_IFS inter frame space
  • the ADV_MCAST_IND packet in one embodiment may include a multicast ID of 2 octets and a payload of 0-35 octets.
  • the multicast ID and the payload can have a different number of octets. Therefore, the maximum transmission time for the payload of the ADV_MCAST_IND packet is 296 ⁇ s.
  • the total timing required to transmit the ADV_MCAST_IND packet in a link level (LL) layer packet is 376 ⁇ s (296 ⁇ s + 80 ⁇ s, where the 80 ⁇ s is due to LL advertising channel overhead).
  • the minimum interval between transmission of ADV_MCAST_IND packets may be 7.5 ms.
  • At least one advertising event can be interleaved between transmission of each ADV_MCAST_IND packet because 3.984ms (for the advertising event) plus 0.376 ms for the ADV_MCAST_IND packet plus 2*0.150ms for the required T_IFS is only 4.66 ms, which is less than the 7.5 ms minimum interval. Therefore, an advertising event can occur along with transmission of the multicast data.
  • any reference to an element herein using a designation such as “first,” “second,” and so forth does not generally limit the quantity or order of those elements. Rather, these designations may be used herein as a convenient method of distinguishing between two or more elements or instances of an element. Thus, a reference to first and second elements does not mean that only two elements may be employed there or that the first element must precede the second element in some manner. Also, unless stated otherwise a set of elements may comprise one or more elements. In addition, terminology of the form “at least one of: A, B, or C" used in the description or the claims means “A or B or C or any combination of these elements.”
  • determining encompasses a wide variety of actions. For example, “determining” may include calculating, computing, processing, deriving, investigating, looking up (e.g., looking up in a table, a database or another data structure), ascertaining and the like. Also, “determining” may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory) and the like. Also, “determining” may include resolving, selecting, choosing, establishing and the like.
  • a phrase referring to "at least one of" a list of items refers to any combination of those items, including single members.
  • "at least one of: a, b, or c” is intended to cover: a, b, c, a-b, a-c, b-c, and a-b-c.
  • any suitable means capable of performing the operations such as various hardware and/or software component(s), circuits, and/or module(s).
  • any operations illustrated in the Figures may be performed by corresponding functional means capable of performing the operations.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array signal
  • PLD programmable logic device
  • a general purpose processor may be a microprocessor, but in the alternative, the processor may be any commercially available processor, controller, microcontroller or state machine.
  • a processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a storage media may be any available media that can be accessed by a computer.
  • such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • any connection is properly termed a computer-readable medium.
  • the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave
  • the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium.
  • Disk and disc includes compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers.
  • computer readable medium may comprise non-transitory computer readable medium (e.g., tangible media).
  • computer readable medium may comprise transitory computer readable medium (e.g., a signal). Combinations of the above should also be included within the scope of computer-readable media.
  • the methods disclosed herein comprise one or more steps or actions for achieving the described method.
  • the method steps and/or actions may be interchanged with one another without departing from the scope of the claims.
  • the order and/or use of specific steps and/or actions may be modified without departing from the scope of the claims.
  • a storage media may be any available media that can be accessed by a computer.
  • such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • Disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Blu-ray® disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers.
  • certain aspects may comprise a computer program product for performing the operations presented herein.
  • a computer program product may comprise a computer readable medium having instructions stored (and/or encoded) thereon, the instructions being executable by one or more processors to perform the operations described herein.
  • the computer program product may include packaging material.
  • Software or instructions may also be transmitted over a transmission medium.
  • a transmission medium For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of transmission medium.
  • DSL digital subscriber line
  • modules and/or other appropriate means for performing the methods and techniques described herein can be downloaded and/or otherwise obtained by a user terminal and/or base station as applicable.
  • a user terminal and/or base station can be coupled to a server to facilitate the transfer of means for performing the methods described herein.
  • various methods described herein can be provided via storage means (e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or floppy disk, etc.), such that a user terminal and/or base station can obtain the various methods upon coupling or providing the storage means to the device.
  • storage means e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or floppy disk, etc.
  • CD compact disc
  • floppy disk etc.
  • any other suitable technique for providing the methods and techniques described herein to a device can be utilized.
  • an apparatus for transmitting multicasting data in a personal area network comprising:
  • an apparatus for receiving multicasting data in a personal area network comprising:
  • a computer readable medium comprising instructions that, when executed, cause an apparatus to perform a method for multicasting data in a personal area network, the method comprising:
  • a computer readable medium comprising instructions that, when executed, cause an apparatus to perform a method for multicasting data in a personal area network, the method comprising:

Claims (15)

  1. Procédé pour multi-diffuser des données dans un réseau local personnel, le procédé comprenant :
    annoncer des capacités de multidiffusion sur un premier canal dans le réseau local personnel ; le procédé étant caractérisé par :
    recevoir une requête pour obtenir des informations concernant un canal de multidiffusion ;
    émettre une réponse à la requête, la réponse comprenant des informations concernant le canal de multidiffusion comprenant au moins une carte de canal ; et
    émettre des paquets multidiffusés sur le canal de multidiffusion conformément à la carte de canal.
  2. Procédé selon la revendication 1, dans lequel les capacités de multidiffusion sont annoncées en utilisant un premier type de paquet d'annonce.
  3. Procédé selon la revendication 2, dans lequel les paquets multidiffusés sont d'un deuxième type de paquet d'annonce.
  4. Procédé selon la revendication 1, dans lequel les informations concernant le canal de multidiffusion comprennent au moins un élément parmi : un décalage, un canal de départ, un identificateur de multidiffusion, et un intervalle.
  5. Procédé pour multi-diffuser des données dans un réseau local personnel, le procédé comprenant :
    analyser un premier canal dans le réseau local personnel pour chercher un dispositif capable de multi-diffuser des données ;
    émettre vers le dispositif une requête pour obtenir des informations concernant un canal de multidiffusion ;
    recevoir une réponse à la requête, la réponse comprenant des informations concernant le canal de multidiffusion comprenant au moins une carte de canal ; et
    recevoir des paquets multidiffusés sur le canal de multidiffusion conformément à la carte de canal.
  6. Procédé selon la revendication 5, dans lequel les capacités du dispositif sont reçues dans un premier type de paquet d'annonce.
  7. Procédé selon la revendication 6, dans lequel les paquets multidiffusés sont d'un deuxième type de paquet d'annonce.
  8. Procédé selon la revendication 5, dans lequel les informations concernant le canal de multidiffusion comprennent au moins un élément parmi : un décalage, un canal de départ, un identificateur de multidiffusion, et un intervalle.
  9. Dispositif pour émettre des données de multidiffusion dans un réseau local personnel, le dispositif comprenant :
    des moyens pour annoncer des capacités de multidiffusion sur un premier canal dans le réseau local personnel ; le dispositif étant caractérisé en ce qu'il comprend :
    des moyens pour recevoir une requête pour obtenir des informations concernant un canal de multidiffusion ;
    des moyens pour émettre une réponse à la requête, la réponse comprenant des informations concernant le canal de multidiffusion comprenant au moins une carte de canal ; et
    des moyens pour émettre des paquets multidiffusés sur le canal de multidiffusion conformément à la carte de canal.
  10. Dispositif selon la revendication 9, dans lequel les capacités de multidiffusion sont annoncées en utilisant un premier type de paquet d'annonce.
  11. Dispositif pour recevoir des données de multidiffusion dans un réseau local personnel, le dispositif comprenant :
    des moyens pour analyser un premier canal dans le réseau local personnel pour chercher un dispositif capable de multi-diffuser des données ;
    des moyens pour émettre vers le dispositif une requête pour obtenir des informations concernant un canal de multidiffusion ;
    des moyens pour recevoir une réponse à la requête, la réponse comprenant des informations concernant le canal de multidiffusion comprenant au moins une carte de canal ; et
    des moyens pour recevoir des paquets multidiffusés sur le canal de multidiffusion conformément à la carte de canal.
  12. Dispositif selon la revendication 11, dans lequel les capacités du dispositif sont reçues dans un premier type de paquet d'annonce.
  13. Dispositif selon la revendication 10 ou la revendication 12, dans lequel les paquets multidiffusés sont d'un deuxième type de paquet d'annonce.
  14. Dispositif selon la revendication 9 ou 11, dans lequel les informations concernant le canal de multidiffusion comprennent au moins un élément parmi : un décalage, un canal de départ, un identificateur de multidiffusion, et un intervalle.
  15. Support lisible par un ordinateur comprenant des instructions qui, lorsqu'elles sont exécutées, amènent un dispositif à réaliser un procédé pour multi-diffuser des données dans un réseau local personnel selon l'une quelconque des revendications 1 à 4 ou 5 à 8.
EP12715525.7A 2011-04-08 2012-04-08 Systèmes et procédés pour mettre en oeuvre une multidiffusion à l'aide d'une technologie sans fil de réseau personnel (pan) Not-in-force EP2695327B1 (fr)

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US201161473597P 2011-04-08 2011-04-08
US13/441,771 US9548869B2 (en) 2011-04-08 2012-04-06 Systems and methods for implementing multicasting using personal area network “pan” wireless technology
PCT/US2012/032665 WO2012139087A1 (fr) 2011-04-08 2012-04-08 Systèmes et procédés pour mettre en œuvre une multidiffusion à l'aide d'une technologie sans fil de réseau personnel (pan)

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CN (1) CN103460644B (fr)
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WO (1) WO2012139087A1 (fr)

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US20120257561A1 (en) 2012-10-11
JP2014514847A (ja) 2014-06-19
CY1117020T1 (el) 2017-04-05
JP5703416B2 (ja) 2015-04-22
CN103460644B (zh) 2016-08-17
US9548869B2 (en) 2017-01-17
CN103460644A (zh) 2013-12-18
EP2695327A1 (fr) 2014-02-12
WO2012139087A1 (fr) 2012-10-11

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